For some reason, my MB likes to automatically turn itself back on whenever I fold the screen down. I only fold the screen down when i take it somewhere, so maybe it has something to do with unplugging the power cord? For instance; I'll close the MB, unplug the cord, put the cord in my bag, and when I come back to the MB I'll hear the HD spin up and the apple light will come on. Sometimes it will just turn itself back off but other times it will stay on and the fans will spin up really fast. I'll open it up and the screen won't turn on, so I close it again, re-open it and it will work and the fans will eventually slow down. I'm completely up to date with everything, so why does my MB do this?